The key transcoding algorithms are achieved by the c language , and we optimize the most computation costing transcoding programs with the sse2 assembly language , which is based on the intel pentium 4 cpu and has the simd function . at last , we achieve the quick video transcoding from hdtv to sdtv in the dct domain on the pc 转码的关键算法由c语言实现,并通过基于intelpentium4cpu具备simd功能的sse2汇编指令集优化运算量大的转码程序,最终在pc平台上实现了在dct域内hdtv至sdtv的快速视频转码。
3 ) the instruction - level parallel calculation of streamlines on 3d curvilinear grids has been implemented firstly by using the streaming simd extensions ( sse ) , which are a set of extensions of the intel pentium hi / 4 processor . compared with the conventional algorithm , sse - based algorithm coded by vector class library enhances performance about 55 % , and coded by inlined - assembly is about 75 % ) pentium ( pentium4 )处理器的流simd扩展( sse ) ,首次实现了3d曲线网格流线计算的指令级并行,与传统算法相比,向量类库编码实现的sse算法将性能提高了55左右,嵌入汇编实现提高了75左右。
intel pentium en francais:intel pentium, nouveau microprocesseur développé par intel ayant une double capacité que les ordinateurs courants vendus sur le marché